HeartSaVioR commented on code in PR #40981:
URL: https://github.com/apache/spark/pull/40981#discussion_r1179869841
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sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/state/RocksDB.scala:
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@@ -247,14 +253,7 @@ class RocksDB(
}
def prefixScan(prefix: Array[Byte]): Iterator[ByteArrayPair] = {
- val threadId = Thread.currentThread().getId
- val iter = prefixScanReuseIter.computeIfAbsent(threadId, tid => {
Review Comment:
It is simpler than that - cached prefixScan iterator does not live across
microbatches. We close it in both commit and rollback. So it's not really a
cache but closer to reference tracking.
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